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  <title>Executes a prepared Query</title>

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</div><hr /><div id="function.maxdb-stmt-execute" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">maxdb_stmt_execute</h1>
  <h1 class="refname">maxdb_stmt::execute</h1>
  <p class="verinfo">(PECL maxdb &gt;= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_stmt_execute</span> -- <span class="refname">maxdb_stmt::execute</span> &mdash; <span class="dc-title">Executes a prepared Query</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.maxdb-stmt-execute-description">
  <h3 class="title">说明</h3>
  <p class="para">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>maxdb_stmt_execute</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$stmt</code></span>
   )</div>

  <p class="para rdfs-comment">面向对象风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>maxdb_stmt::execute</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <p class="para rdfs-comment">
   The <span class="function"><strong>maxdb_stmt_execute()</strong></span> function executes a query that has been previously
   prepared using the <span class="function"><a href="function.maxdb-prepare.html" class="function">maxdb_prepare()</a></span> function represented by the
   <em><code class="parameter">stmt</code></em> resource. When executed any parameter markers which exist will
   automatically be replaced with the appropiate data.
  </p>
  <p class="para">
   If the statement is UPDATE, DELETE, or INSERT, the total number of affected rows can be
   determined by using the <span class="function"><a href="function.maxdb-stmt-affected-rows.html" class="function">maxdb_stmt_affected_rows()</a></span> function. Likewise,
   if the query yields a result set the <span class="function"><a href="function.maxdb-fetch.html" class="function">maxdb_fetch()</a></span> function is used.
  </p>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    When using <span class="function"><strong>maxdb_stmt_execute()</strong></span>, the <span class="function"><a href="function.maxdb-fetch.html" class="function">maxdb_fetch()</a></span>
    function must be used to fetch the data prior to preforming any additional queries.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.maxdb-stmt-execute-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.maxdb-stmt-execute-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1305">
   <p><strong>Example #1 面向对象风格</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$maxdb&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">maxdb</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"RED"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"CREATE&nbsp;TABLE&nbsp;temp.mycity&nbsp;LIKE&nbsp;hotel.city"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Prepare&nbsp;an&nbsp;insert&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;temp.mycity&nbsp;(zip,&nbsp;name,&nbsp;state)&nbsp;VALUES&nbsp;(?,?,?)"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">bind_param</span><span style="color: #007700">(</span><span style="color: #DD0000">"sss"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val1</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val3</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$val1&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'11111'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val2&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Georgetown'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val3&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'NY'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;Execute&nbsp;the&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$val1&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'22222'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val2&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Hubbatown'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val3&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'CA'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;Execute&nbsp;the&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">execute</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$stmt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/*&nbsp;retrieve&nbsp;all&nbsp;rows&nbsp;from&nbsp;myCity&nbsp;*/<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;zip,&nbsp;name,&nbsp;state&nbsp;FROM&nbsp;temp.mycity"</span><span style="color: #007700">;<br />if&nbsp;(</span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$query</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;while&nbsp;(</span><span style="color: #0000BB">$row&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">fetch_row</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s&nbsp;(%s,%s)\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">],&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">],&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]);<br />&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;free&nbsp;result&nbsp;set&nbsp;*/<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">close</span><span style="color: #007700">();<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;remove&nbsp;table&nbsp;*/<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"DROP&nbsp;TABLE&nbsp;temp.mycity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">$maxdb</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">close</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

  </div>
  <div class="example" id="example-1306">
   <p><strong>Example #2 过程化风格</strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">maxdb_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"RED"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">maxdb_connect_errno</span><span style="color: #007700">())&nbsp;{<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"CREATE&nbsp;TABLE&nbsp;temp.mycity&nbsp;LIKE&nbsp;hotel.city"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Prepare&nbsp;an&nbsp;insert&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"INSERT&nbsp;INTO&nbsp;temp.mycity&nbsp;(zip,&nbsp;name,&nbsp;state)&nbsp;VALUES&nbsp;(?,?,?)"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">maxdb_prepare</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">maxdb_stmt_bind_param</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"sss"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val1</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$val3</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$val1&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'11111'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val2&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Georgetown'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val3&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'NY'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;Execute&nbsp;the&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_stmt_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$val1&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'22222'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val2&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Hubbatown'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$val3&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'CA'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;Execute&nbsp;the&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_stmt_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;statement&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_stmt_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;retrieve&nbsp;all&nbsp;rows&nbsp;from&nbsp;myCity&nbsp;*/<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;zip,&nbsp;name,&nbsp;state&nbsp;FROM&nbsp;temp.mycity"</span><span style="color: #007700">;<br />if&nbsp;(</span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$query</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;while&nbsp;(</span><span style="color: #0000BB">$row&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">maxdb_fetch_row</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s&nbsp;(%s,%s)\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">],&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">],&nbsp;</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]);<br />&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">/*&nbsp;free&nbsp;result&nbsp;set&nbsp;*/<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">maxdb_free_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;remove&nbsp;table&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"DROP&nbsp;TABLE&nbsp;temp.mycity"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
   </div>

  </div>
  <p class="para">以上例程的输出类似于：</p>
  <div class="example-contents screen">
<div class="cdata"><pre>
11111 (Georgetown,NY)
22222 (Hubbatown,CA)
</pre></div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.maxdb-stmt-execute-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.maxdb-prepare.html" class="function" rel="rdfs-seeAlso">maxdb_prepare()</a> - Prepare an SQL statement for execution</span></li>
    <li class="member"><span class="function"><a href="function.maxdb-stmt-bind-param.html" class="function" rel="rdfs-seeAlso">maxdb_stmt_bind_param()</a> - Binds variables to a prepared statement as parameters</span></li>
   </ul>
  </p>
 </div>


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